1 // Allocator that wraps operator new -*- C++ -*- 2 3 // Copyright (C) 2001-2022 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 /** @file ext/new_allocator.h 26 * This file is a GNU extension to the Standard C++ Library. 27 */ 28 29 #ifndef _NEW_ALLOCATOR_H 30 #define _NEW_ALLOCATOR_H 1 31 32 #include <bits/new_allocator.h> 33 _GLIBCXX_VISIBILITY(default)34namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) 35 { 36 _GLIBCXX_BEGIN_NAMESPACE_VERSION 37 38 /** 39 * @brief An allocator that uses global `new`, as per C++03 [20.4.1]. 40 * @ingroup allocators 41 * 42 * This is precisely the allocator defined in the C++ Standard. 43 * - all allocation calls `operator new` 44 * - all deallocation calls `operator delete` 45 * 46 * This is a non-standard extension that can be used to guarantee 47 * allocation from `new` even if the library has been configured to 48 * use a different implementation for `std::allocator`. 49 * 50 * @tparam _Tp Type of allocated object. 51 * 52 * @headerfile ext/new_allocator.h 53 */ 54 template<typename _Tp> 55 class new_allocator : public std::__new_allocator<_Tp> 56 { 57 public: 58 #if __cplusplus <= 201703L 59 template<typename _Tp1> 60 struct rebind 61 { typedef new_allocator<_Tp1> other; }; 62 #endif 63 64 new_allocator() _GLIBCXX_USE_NOEXCEPT { } 65 66 new_allocator(const new_allocator&) _GLIBCXX_USE_NOEXCEPT { } 67 68 template<typename _Tp1> 69 new_allocator(const new_allocator<_Tp1>&) _GLIBCXX_USE_NOEXCEPT { } 70 }; 71 72 _GLIBCXX_END_NAMESPACE_VERSION 73 } // namespace 74 75 #endif 76